Oil-strainer



(No Model.)

W. OONNOLLY.

OIL STRAINER. No. 323,637. Patented Aug. 4, 1885. 1

WITNESSES INVENTOR Wb w BY JaU/M M v ATTORNEYS.

"v PETiBS, Phma'hthagnphur. Wuhillgtan. D. C.

id'nirnn STATES ATENT Unmet,

\VlLLIAM CONXOLLY, OF SOUTH NOR'WALK, CONNECTICUT.

OIL-STRAINER.

GATION forming part of Letters Patent No. 323,637, dated August I, 1885.

Application filed October 10, 1884. No mmhl.)

To all whom zit may concern:

Be it known that I, \VILLLiM CONNOLLY, of South Norwalk, in the county of Fairfield and State of Connecticut, have invented a new and Improved Oil-Strainer, of which the followingis a full, clear, and exact description.

The object of my invention is to provide a simple, inexpensive, and efficient device for straining or clarifying oil that has been used in lubricating sewing or other machines, to allow the oil to repeatedly be used withoutcutting the working parts of the machines, and with little or no waste of the oil. The device is specially intended for use in connection with the oil-drip pans for sewing-machines shown in Letters Patent N 299,743, issued to me June 3, 1884; but it may be used for straining or clarifying any other oils or liquid sub stances.

The invention consists in particular constructions and combinations of parts of the strainer, all as hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification,in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a central vertical sectional clevation of ill y improved strainer. Fig. 2 is a plan view thereof. 3 is a transverse sec tion taken on the line at as, Fig. 1, and Fi 4c is a plan view in section on the line 3 y, Fig.1.

The letter A indicates the case or outer wall or shell of the strainer, which is shown with a downwardly tapering portion, B, in the lower extremity of which is fitted the nozzle or spout G, which may be entered into the neck of a suitable vessel or can, (not shown,) into which the oil may be discharged from the strainer. The case A is made open at the top to receive one or more straining chambers, presently to he described, and the side walls 01 the case A B G are imperforate or liquidtight. At the lower end of the nozzle 0, I fit a perforated or wire gauze plate, 0, through which the oil escapes, said plate serving also to retain in the nozzle the filtering material I), which may consist of cotton or other fibers, i'clt, or any other suitable substance. I prel'er to extend the wall of the nozzle 0, above the lower end of the part B of the case, as at c, to form a chamber or pocket at Z), in which sediment may collect, and into the upper end of the nozzle I fit a ring or cap, E, which has aperforated or wire-gauze head, 0, onto which the oil may drop from the upper strainingchambers. The cap E may be made as deep as desired to enlarge the sediment pocket b, and the cap may be fitted into a nozzle, 0, ex tending only to a point ofjunction at c of the nozzle with the part B of the case, as will readily be understood.

The letter F indicates an upper oil receiving and straining chamber, which is suspended from an upper rabbet or shoulder, a, of the case A, and so that the outer wall of the strainer is held away from the case some little distance to leave aspace, as at G, between the chamber F and the case. To prevent the oil which may slowly filter through the chanr her from touching the case, I make the straining-chamber F with a perforated outer side wall, f, a perforated inner wall, f, and an imperforate bottom, f which tapers downward to a central point or end at f, and be tween the walls f f, I place a straining or tiltering substance, H, of cotton, felt, or other material through which the escaping oilpasses. There may be as many of the straining-chambers F held or nested in the case A as the capacity of the strainer or the nature of the oil or other fluid being passed through it may require. The drawings represent two such chambers F, the inner one having a fixed top flange or rim, I, by which itis supported from the top of the outcronc, the inner chanr ber B being enough smaller than the outer one to provide a space, as at .I, between the two chambers, to cause the fluid to pass from the inner one to the outer one from its lower extremity at f when the feed of oil is slow.

At K is shown a loose cap or cover plate, which is fitted over the top of the inner strainer-chamber when more than one chamber is used, and has perforations, as at 7.2, through which the oil may pass from a pipe or conduit, L, which may connect with the oil-drip pan of a sewing or other machine, or with the drip-pans of a series of such machines,to pass the drip-oil directly through the strainer, so that the clarified oil may be used over and over again without injury to the machines, and with little or no waste of the oil.

On the case A, I fit the cover M, having an edge flange, m, and a central opening, m, over the cap-plate K, through which the oil may be passed into the strainer, and a plate, N, hinged to the cover M, may be turned down to close the opening m and exclude dust when the strainer is not receiving liquid at the top or is out of use.

The operation is as follows: The dirty oil is passed from the pipe L or any vessel onto the plate K, and through its perforations into the inner strainer, F, the plate K holding back any large particles-such as threads or metal chipswhile the oil falls to the bottomf of the strainer, and rises to and passes through the perforated or wiregauze inner wall,f, thence through the filtering substance H and the outer perforated wall, f, down which it flows and passes totheend or central point, f from which it drops into the outer strainer, F, until it fills filtering or straining substance H it passes and flows down to the end f of the outer strainer onto and level with theperforated plate 0 of the cap E, the impact with which tends to divide the dropping oil into fine globules, the pocket 1) Collecting some of the sedimentary deposits which have chanced to escape through the strainers F above, and in passing through the nozzle 0 the remaining sediment in the oil is retained by the filtering substance I). and the clarified oil escapes through the perforated plate 0 in condition to be used again.

bhOllld the supply of oil to the strainer be within its easy discharging capacity, the oil will not rise much above the top edges of the imperforate bottoms f of the st-raining-chambers F, as it passes through their perforated walls and the filtering substance between them; but should the supply of oil be increased the oil will rise more or less in the chambers, especially the inner one. The dripping of the oil from the central point, f", of the inner chamber F onto the oil contained in the bottom f of the outer chamber F causes waves or undulations of the oil in the latter chamber toward all sides, and facilitates the passage therethrough of the oil.

Should the supply of oil be sufficient to cause it to rise in the outer chamber F above the point f of the inner chamber, any sediment passing from the inner chamber to the outer one will tend to settle in the bottom of the outer one, rather than to pass through its perforated side walls.

If desired,the filtering material in the strain i ng-chambers and nozzle may be graded finer, or be more closely packed at the successive places through which the oil passes to the point of discharge.

The chamber F and cap E may readily be removed for renewal of the filtering substances employed in the strainer or for cleaning the strainer at any time.

stance H, the action of the imperforate bottoms f of the chambers in collecting sediment, while allowing the strained liquids to pass over the top edges and escape downward to a central point of discharge at the bottom, being substantially the same in any case.

The strainers are simple in construction, and are not liable to get out of order, and may be made of any required size.

Having thus described my invention, what. I claim as new, and desire to secure by Letters Patent, is

1. A strainer constructed with an outer case and one or more filtering-chambers having perforated side walls and an imperforate botto its perforated walls, through which and the l tom tapering downward, to discharge the strained liquid from a central point of its under surface, substantially as herein set forth.

2. A strainer constructed with an outer case, A, and one or more filtering chambers, F, having-double perforated side walls, ff, with a filtering substance, H, interposed between them, and said strainer having an imperforate bottom tapering downward to a central point from which the strained liquid discharges, substantially as herein set forth.

3. The straining-chamber F, constructed with perforated side walls and an imperforate bottom tapering downward to a central point from which the liquid discharges, substantially as herein set forth.

4. A strainer constructed with a case, A, having a discharge-nozzle, 0, provided with a perforated bottom-plate, c, a filtering substance, D, and acap, E, having a perforated top, 6, and projecting above the inner end of the spout to form a sediment collecting pocket, 12, substantially as herein set forth.

5. A strainer constructed with a case, A, having a discharge-nozzle, 0, provided with a perforated bottom plate, 0, and a filtering substance, D, covered by a cap, E, having a perforated top, 6. in combination with a straining-chamber held above and dropping the liquid on the cap, substantially as herein set forth.

6. A strainer constructed with a case, A, having one or more straining-chambers, F, made with perforated sides and imperforate bottoms, a cap-plate, K. and cover M, and a discharge-spout, 0, having a perforated bottom plate, 0, perforated top plate,E, the sediment-collecting pocket I), and the filtering substances H D, placed in the straining-chambers and spout, all substantially as herein set forth.

\VILLIAM GONNOLLY.

W'itnesses:

GEORGE F. BARTHOLMES, WILLIAM M. BARTHOLMES. 

